Request #11741 has been rejected by Eschwartz [1]:
We don't delete history, so you wouldn't be able to "re-add from fresh
source", and that's not even your problem regardless, so even if you
were able to do so, it would still be rejected.
Please post to the aur-general mailing list or the Arch forums in
order to get help.a
[1] https://aur.archlinux.org/account/Eschwartz/